Phytomelanin

– Characteristics of Phytomelanin:
– Phytomelanin is a black, inert, organic material.
– It forms a crust-like covering on some seeds.
– Commonly found in Asparagales and Asteraceae.
– Mechanically hard and resistant.
– Provides resistance to insect predators and desiccation.

– Distribution of Phytomelanin:
– Found in most families of the Asparagales.
– Absent in Orchidaceae.
– More pliable in developing fruit, hardening later.
– Appears to be exuded from the hypodermis.
– Provides protection in different plant species.

– Chemical Composition of Phytomelanin:
– Chemically appears to be a polyvinyl aromatic alcohol.
– Forms a resistant substance.
– Plays a role in plant defense mechanisms.
– Provides a protective layer to seeds.
– Contributes to the survival of certain plant species.

– Research on Phytomelanin:
– Studies by Pandey et al in 1989, 2001, and 2014.
– Research on the development of the Phytomelanin layer in fruits.
– Investigation into the role of Phytomelanin in plant systematics.
– Examination of Phytomelanin in different plant families.
– Scientific contributions to understanding plant biology.

– Importance of Phytomelanin:
– Offers protection against environmental stress.
– Aids in seed dispersal and germination.
– Enhances plant survival in diverse ecosystems.
– Contributes to the evolution of plant species.
– Plays a crucial role in plant adaptation strategies.

Phytomelanin (Wikipedia)

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Phytomelanin (phytomelan) is a black, inert, organic material that forms a crust-like covering of some seeds, commonly found in Asparagales and Asteraceae but uncommon in other taxonomic groupings. Phytomelanin is found in most families of the Asparagales (although not in Orchidaceae). It is mechanically hard and forms a resistant substance, although it is more pliable in the developing fruit, hardening later. Chemically it appears to be a polyvinyl aromatic alcohol, and is thought to be exuded from the hypodermis. It appears to provide resistance to insect predators and desiccation.